[Omake] unbound variable error

[Christopher L Conway]

The attached file gives the following error for "omake uninstall" with
OMake 0.9.8.5:

*** omake error:
   File OMakefile: line 48, characters 38-47
   unbound variable: global.parent

Line 48 is in an uninstall rule:

    uninstall:
        println(Removing $(path))
        rm -f $(path)
        parent = $(dirof $(path))
        println( $"dname=$(dname) dir=$(parent)" ) # Line 48
        while $(not $(or $(equal $(dname), $(parent)), \
                         $(glob i, $(path_concat $(parent) $"*"))))
            println(Removing $(parent))
            rm -f $(parent)
            parent = $(dir $(path_concat $(parent) ..))
            println( dname=$(dname) dir=$(parent) )

So, somehow, the definition of parent on Line 47 isn't visible on Line
48. Moving the relevant logic to a function fixes the problem:

cleanup_dirs(root,subdir) =
    root = $(dir $(root))
    subdir = $(dir $(subdir))
    while $(not $(or $(equal $(root), $(subdir)), \
                     $(glob i, $(path_concat $(subdir) $"*"))))
       println(Removing $(subdir))
       rmdir -f $(subdir)
       subdir = $(dir $(path_concat $(subdir) ..))
       println( dname=$(root) dir=$(subdir) )

uninstall:
    println(Removing $(path))
    rm -f $(path)
    cleanup_dirs( $(dname), $(dirof $(path)) )

This seems like it might be related to
http://bugzilla.metaprl.org/show_bug.cgi?id=500

Regards,
Chris
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